| Manufacturer | Part Number | Description |
|---|---|---|
NTE Electronics (defunct)
| D40K2 | Silicon NPN Transistor |
| Unknown Manufacturer | D40K2 | NPN Transistor |
General Electric
| D40K2 | NPN Power Darlington Transistors |
Central Semiconductor
| D40K2 | NPN SILICON DARLINGTON POWER TRANSISTOR |
